You could purchase drones and ship directly or leverage on affiliate
programs. There are drones for leisure and fun activities.

Map Making

The aerial craft is used to map isolated areas. They are an effective
tool and used by geographers, farmers and documentarians.

Renting
Business

You can make steady income by opening a drone rental. They are leased to
companies, individuals, security outfits and farmers. You could also rent the
vehicles to drone enthusiast and for leisure activities.

Repair

The vehicles are delicate and require regular maintenance. Running a
repair outfit where there are lots enthusiasts will be profitable. Companies
that regularly use the technology would require occasional maintenance and
repairs.

Coaching

Those interested in the technology need to know how to use it. Operating
a coaching business would teach people how to safety use the device.

Drone Delivery
Service

Although this business is at an infant stage it has great prospects.
Imagine delivering your pizza/shop purchases directly to your door step. This
is going to be possible sooner than you think.

Agricultural
Services

They are used by farmers for surveillance and other functions. They are
perfect for pest control and soil hydration.

Videography

Entertainers and documentarians have found unmanned aerial vehicles
useful. You must have seen breathtaking musical videos and films depicting
aerial shots. Other applications are wedding and event videography.